Figure 2: Numerical simulation and characterization of fabricated plasmonic sample.
From: Frequency comb transferred by surface plasmon resonance
(a) Scanning electron microscope image of the fabricated subwavelength nanohole array for plasmonic EOT. The fabricated nanohole has the diameter (d) of 200 nm, pitch (l) of 530 nm and thickness (t) of 100 nm on 25-nm-thick ITO-coated quartz substrate. (b) Calculated intensity distribution of an plasmonic sample taken from the side. (c) Calculated intensity distribution at the interface between Au and ITO layer. (d) Theoretical (blue line) and experimental (orange line) spectrum of transmitted frequency combs through the plasmonic sample. Purple, blue and green bars represent the selected spectral components (800, 840 and 900 nm) to characterize frequency comb, respectively. Inset (top left) shows the original spectrum of the frequency comb. (e) Polarization dependent transmission spectrum through the plasmonic sample at an incident angle of 45°.
